41.—(1) A relevant officer may only exercise powers under regulations 37 to 39 pursuant to arrangements made with the OFT—
(a)by or on behalf of the local weights and measures authority of which he is an officer (“his authority”); or
(b)by DETI.
(2) Anything done or omitted to be done by, or in relation to, a relevant officer in the exercise or purported exercise of a power in this Part shall be treated for all purposes as having been done or omitted to be done by, or in relation to, an officer of the OFT.
(3) Paragraph (2) does not apply for the purposes of any criminal proceedings brought against the relevant officer, his authority, DETI or the OFT, in respect of anything done or omitted to be done by the officer.
(4) A relevant officer shall not disclose to any person other than the OFT and his authority or, as the case may be, DETI information obtained by him in the exercise of such powers unless—
(a)he has the approval of the OFT to do so; or
(b)he is under a duty to make the disclosure.